1 files changed, 270 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_caps.c b/mesalib/src/gallium/auxiliary/util/u_caps.c
new file mode 100644
index 000000000..fbe265d0e
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_caps.c
@@ -0,0 +1,270 @@
+/**************************************************************************
+ *
+ * Copyright 2010 Vmware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include "pipe/p_screen.h"
+#include "util/u_format.h"
+#include "util/u_debug.h"
+#include "u_caps.h"
+
+/**
+ * Iterates over a list of caps checks as defined in u_caps.h. Should
+ * all checks pass returns TRUE and out is set to the last element of
+ * the list (TERMINATE). Should any check fail returns FALSE and set
+ * out to the index of the start of the first failing check.
+ */
+boolean
+util_check_caps_out(struct pipe_screen *screen, const unsigned *list, int *out)
+{
+   int i, tmpi;
+   float tmpf;
+
+   for (i = 0; list[i];) {
+      switch(list[i++]) {
+      case UTIL_CAPS_CHECK_CAP:
+         if (!screen->get_param(screen, list[i++])) {
+            *out = i - 2;
+            return FALSE;
+         }
+         break;
+      case UTIL_CAPS_CHECK_INT:
+         tmpi = screen->get_param(screen, list[i++]);
+         if (tmpi < (int)list[i++]) {
+            *out = i - 3;
+            return FALSE;
+         }
+         break;
+      case UTIL_CAPS_CHECK_FLOAT:
+         tmpf = screen->get_paramf(screen, list[i++]);
+         if (tmpf < (float)list[i++]) {
+            *out = i - 3;
+            return FALSE;
+         }
+         break;
+      case UTIL_CAPS_CHECK_FORMAT:
+         if (!screen->is_format_supported(screen,
+                                          list[i++],
+                                          PIPE_TEXTURE_2D,
+                                          0,
+                                          PIPE_BIND_SAMPLER_VIEW)) {
+            *out = i - 2;
+            return FALSE;
+         }
+         break;
+      case UTIL_CAPS_CHECK_SHADER:
+         tmpi = screen->get_shader_param(screen, list[i] >> 24, list[i] & ((1 << 24) - 1));
+         ++i;
+         if (tmpi < (int)list[i++]) {
+            *out = i - 3;
+            return FALSE;
+         }
+         break;
+      case UTIL_CAPS_CHECK_UNIMPLEMENTED:
+         *out = i - 1;
+         return FALSE;
+      default:
+         assert(!"Unsupported check");
+         return FALSE;
+      }
+   }
+
+   *out = i;
+   return TRUE;
+}
+
+/**
+ * Iterates over a list of caps checks as defined in u_caps.h.
+ * Returns TRUE if all caps checks pass returns FALSE otherwise.
+ */
+boolean
+util_check_caps(struct pipe_screen *screen, const unsigned *list)
+{
+   int out;
+   return util_check_caps_out(screen, list, &out);
+}
+
+
+/*
+ * Below follows some demo lists.
+ *
+ * None of these lists are exhausting lists of what is
+ * actually needed to support said API and more here for
+ * as example on how to uses the above functions. Especially
+ * for DX10 and DX11 where Gallium is missing features.
+ */
+
+/* DX 9_1 */
+static unsigned caps_dx_9_1[] = {
+   UTIL_CHECK_INT(MAX_RENDER_TARGETS, 1),
+   UTIL_CHECK_INT(MAX_TEXTURE_2D_LEVELS, 12),    /* 2048 */
+   UTIL_CHECK_INT(MAX_TEXTURE_3D_LEVELS, 9),     /* 256 */
+   UTIL_CHECK_INT(MAX_TEXTURE_CUBE_LEVELS, 10),  /* 512 */
+   UTIL_CHECK_FLOAT(MAX_TEXTURE_ANISOTROPY, 2),
+   UTIL_CHECK_TERMINATE
+};
+
+/* DX 9_2 */
+static unsigned caps_dx_9_2[] = {
+   UTIL_CHECK_CAP(OCCLUSION_QUERY),
+   UTIL_CHECK_CAP(BLEND_EQUATION_SEPARATE),
+   UTIL_CHECK_INT(MAX_RENDER_TARGETS, 1),
+   UTIL_CHECK_INT(MAX_TEXTURE_2D_LEVELS, 12),    /* 2048 */
+   UTIL_CHECK_INT(MAX_TEXTURE_3D_LEVELS, 9),     /* 256 */
+   UTIL_CHECK_INT(MAX_TEXTURE_CUBE_LEVELS, 10),  /* 512 */
+   UTIL_CHECK_FLOAT(MAX_TEXTURE_ANISOTROPY, 16),
+   UTIL_CHECK_TERMINATE
+};
+
+/* DX 9_3 */
+static unsigned caps_dx_9_3[] = {
+   UTIL_CHECK_CAP(SM3),
+ //UTIL_CHECK_CAP(INSTANCING),
+   UTIL_CHECK_CAP(OCCLUSION_QUERY),
+   UTIL_CHECK_INT(MAX_RENDER_TARGETS, 4),
+   UTIL_CHECK_INT(MAX_TEXTURE_2D_LEVELS, 13),    /* 4096 */
+   UTIL_CHECK_INT(MAX_TEXTURE_3D_LEVELS, 9),     /* 256 */
+   UTIL_CHECK_INT(MAX_TEXTURE_CUBE_LEVELS, 10),  /* 512 */
+   UTIL_CHECK_FLOAT(MAX_TEXTURE_ANISOTROPY, 16),
+   UTIL_CHECK_TERMINATE
+};
+
+/* DX 10 */
+static unsigned caps_dx_10[] = {
+   UTIL_CHECK_CAP(SM3),
+ //UTIL_CHECK_CAP(INSTANCING),
+   UTIL_CHECK_CAP(OCCLUSION_QUERY),
+   UTIL_CHECK_INT(MAX_RENDER_TARGETS, 8),
+   UTIL_CHECK_INT(MAX_TEXTURE_2D_LEVELS, 14),    /* 8192 */
+   UTIL_CHECK_INT(MAX_TEXTURE_3D_LEVELS, 12),    /* 2048 */
+   UTIL_CHECK_INT(MAX_TEXTURE_CUBE_LEVELS, 14),  /* 8192 */
+   UTIL_CHECK_FLOAT(MAX_TEXTURE_ANISOTROPY, 16),
+   UTIL_CHECK_UNIMPLEMENTED, /* XXX Unimplemented features in Gallium */
+   UTIL_CHECK_TERMINATE
+};
+
+/* DX11 */
+static unsigned caps_dx_11[] = {
+   UTIL_CHECK_CAP(SM3),
+ //UTIL_CHECK_CAP(INSTANCING),
+   UTIL_CHECK_CAP(OCCLUSION_QUERY),
+   UTIL_CHECK_INT(MAX_RENDER_TARGETS, 8),
+   UTIL_CHECK_INT(MAX_TEXTURE_2D_LEVELS, 14),    /* 16384 */
+   UTIL_CHECK_INT(MAX_TEXTURE_3D_LEVELS, 12),    /* 2048 */
+   UTIL_CHECK_INT(MAX_TEXTURE_CUBE_LEVELS, 14),  /* 16384 */
+   UTIL_CHECK_FLOAT(MAX_TEXTURE_ANISOTROPY, 16),
+   UTIL_CHECK_FORMAT(B8G8R8A8_UNORM),
+   UTIL_CHECK_UNIMPLEMENTED, /* XXX Unimplemented features in Gallium */
+   UTIL_CHECK_TERMINATE
+};
+
+/* OpenGL 2.1 */
+static unsigned caps_opengl_2_1[] = {
+   UTIL_CHECK_CAP(GLSL),
+   UTIL_CHECK_CAP(OCCLUSION_QUERY),
+   UTIL_CHECK_CAP(TWO_SIDED_STENCIL),
+   UTIL_CHECK_CAP(BLEND_EQUATION_SEPARATE),
+   UTIL_CHECK_INT(MAX_RENDER_TARGETS, 2),
+   UTIL_CHECK_TERMINATE
+};
+
+/* OpenGL 3.0 */
+/* UTIL_CHECK_INT(MAX_RENDER_TARGETS, 8), */
+
+/* Shader Model 3 */
+static unsigned caps_sm3[] = {
+    UTIL_CHECK_SHADER(FRAGMENT, MAX_INSTRUCTIONS, 512),
+    UTIL_CHECK_SHADER(FRAGMENT, MAX_INPUTS, 10),
+    UTIL_CHECK_SHADER(FRAGMENT, MAX_TEMPS, 32),
+    UTIL_CHECK_SHADER(FRAGMENT, MAX_ADDRS, 1),
+    UTIL_CHECK_SHADER(FRAGMENT, MAX_CONSTS, 224),
+
+    UTIL_CHECK_SHADER(VERTEX, MAX_INSTRUCTIONS, 512),
+    UTIL_CHECK_SHADER(VERTEX, MAX_INPUTS, 16),
+    UTIL_CHECK_SHADER(VERTEX, MAX_TEMPS, 32),
+    UTIL_CHECK_SHADER(VERTEX, MAX_ADDRS, 2),
+    UTIL_CHECK_SHADER(VERTEX, MAX_CONSTS, 256),
+
+    UTIL_CHECK_TERMINATE
+};
+
+/**
+ * Demo function which checks against theoretical caps needed for different APIs.
+ */
+void util_caps_demo_print(struct pipe_screen *screen)
+{
+   struct {
+      char* name;
+      unsigned *list;
+   } list[] = {
+      {"DX 9.1", caps_dx_9_1},
+      {"DX 9.2", caps_dx_9_2},
+      {"DX 9.3", caps_dx_9_3},
+      {"DX 10", caps_dx_10},
+      {"DX 11", caps_dx_11},
+      {"OpenGL 2.1", caps_opengl_2_1},
+/*    {"OpenGL 3.0", caps_opengl_3_0},*/
+      {"SM3", caps_sm3},
+      {NULL, NULL}
+   };
+   int i, out = 0;
+
+   for (i = 0; list[i].name; i++) {
+      if (util_check_caps_out(screen, list[i].list, &out)) {
+         debug_printf("%s: %s yes\n", __FUNCTION__, list[i].name);
+         continue;
+      }
+      switch (list[i].list[out]) {
+      case UTIL_CAPS_CHECK_CAP:
+         debug_printf("%s: %s no (cap %u not supported)\n", __FUNCTION__,
+                      list[i].name,
+                      list[i].list[out + 1]);
+         break;
+      case UTIL_CAPS_CHECK_INT:
+         debug_printf("%s: %s no (cap %u less then %u)\n", __FUNCTION__,
+                      list[i].name,
+                      list[i].list[out + 1],
+                      list[i].list[out + 2]);
+         break;
+      case UTIL_CAPS_CHECK_FLOAT:
+         debug_printf("%s: %s no (cap %u less then %f)\n", __FUNCTION__,
+                      list[i].name,
+                      list[i].list[out + 1],
+                      (double)(int)list[i].list[out + 2]);
+         break;
+      case UTIL_CAPS_CHECK_FORMAT:
+         debug_printf("%s: %s no (format %s not supported)\n", __FUNCTION__,
+                      list[i].name,
+                      util_format_name(list[i].list[out + 1]) + 12);
+         break;
+      case UTIL_CAPS_CHECK_UNIMPLEMENTED:
+         debug_printf("%s: %s no (not implemented in gallium or state tracker)\n",
+                      __FUNCTION__, list[i].name);
+         break;
+      default:
+            assert(!"Unsupported check");
+      }
+   }
+}